CN211008782U - Steam turbine generator unit - Google Patents
Steam turbine generator unit Download PDFInfo
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- CN211008782U CN211008782U CN201922331255.7U CN201922331255U CN211008782U CN 211008782 U CN211008782 U CN 211008782U CN 201922331255 U CN201922331255 U CN 201922331255U CN 211008782 U CN211008782 U CN 211008782U
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- rotor
- generator
- steam turbine
- turbine rotor
- pivot
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Abstract
The utility model discloses a turbo generator set, including the steam turbine rotor and the generator rotor that set up side by side, the steam turbine rotor is established in the steam turbine rotor pivot, the generator rotor is established in the generator rotor pivot, steam turbine rotor pivot and generator rotor pivot are the whole pivot of same root, and it is equipped with thrust bearing structure to correspond whole pivot. This turbo generator set structural design is reasonable, and steam turbine rotor utilizes same pivot with generator rotor, saves the shaft coupling butt joint, can effectively reduce the running resistance, and the operation is stable under the high rotational speed, applicable turbo generator set more than 9000 commentaries on classics/minute in the rotational speed.
Description
Technical Field
The utility model belongs to the technical field of the turbine power generation technique and specifically relates to a coaxial turbo generator set of steam turbine rotor and generator rotor is related to.
Background
At present, in a turbo generator unit, a steam turbine is connected with a rotating shaft of a generator through a coupler, and torque is transmitted through the coupler. The connection mode enables the steam turbine and the generator to become relatively independent equipment, and brings much convenience to design and manufacture; however, when the structure mode is applied to a high-speed steam turbine, certain limitations exist, which are mainly expressed as follows: 1. the friction resistance loss is large, because the steam turbine and the generator respectively have independent bearings, at least four sets of bearings are needed, and the large number of bearings is one of the important reasons for large friction resistance during operation. 2. The main shaft connected by the coupler is adopted, and due to the centering error of the central line of the shaft, shafting vibration can be caused during high-speed rotation, and the operation stability is poor.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to solve the technical problem that a turbo generator set is provided to reach and effectively reduce the running resistance, and stable purpose under the high rotational speed.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
this turbo generator set, including the steam turbine rotor and the generator rotor that set up side by side, the steam turbine rotor is established in steam turbine rotor pivot, the generator rotor is established in generator rotor pivot, steam turbine rotor pivot and generator rotor pivot are the whole pivot of same root, and it is equipped with thrust bearing structure to correspond whole pivot.
Furthermore, the thrust bearing structure comprises a bidirectional thrust bearing and a pair of radial bearings or more than two radial bearings which are arranged at the end part of the integral rotating shaft.
The thrust bearing structure comprises a pair of radial thrust bearings or more than two thrust bearings.
And a steam sealing structure is arranged between the steam turbine rotor and the generator rotor on the integral rotating shaft.
The generator rotor is positioned between a pair of radial bearings, one between the turbine rotor and the generator rotor.
The whole rotating shaft is provided with a limiting disc corresponding to the radial thrust bearing, and the end face of the radial thrust bearing is arranged corresponding to one side face of the limiting disc.
The pair of radial thrust bearings are located between the turbine rotor and the generator rotor.
The turbine rotor and the generator rotor are positioned between a pair of radial thrust bearings.
Compared with the prior art, the utility model, have following advantage:
this turbo generator set structural design is reasonable, and steam turbine rotor utilizes same pivot with generator rotor, saves the shaft coupling butt joint, can effectively reduce the running resistance, and the operation is stable under the high rotational speed, applicable turbo generator set more than 9000 commentaries on classics/minute in the rotational speed.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic view of the coaxial arrangement of two rotors according to the present invention.
Fig. 2 is a schematic diagram of the coaxial arrangement of the two rotors of the present invention.
Fig. 3 is a schematic diagram of the coaxial arrangement of the two rotors of the present invention.
In the figure:
1. the steam turbine comprises an integral rotating shaft, 2. a steam turbine rotor, 3. a generator rotor, 4. a radial bearing, 5. a two-way thrust bearing, 6. a steam sealing structure, 7. a limiting disc and 8. a radial thrust bearing.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the steam turbine generator unit with the steam turbine rotor and the generator rotor coaxial comprises a steam turbine rotor 2 and a generator rotor 3 which are arranged side by side, wherein the steam turbine rotor is arranged on a rotating shaft of the steam turbine rotor, the generator rotor is arranged on a rotating shaft of the generator rotor, the rotating shaft of the steam turbine rotor and the rotating shaft of the generator rotor are an integral rotating shaft 1 of the same root, and a thrust bearing structure is arranged corresponding to the integral rotating shaft.
The steam turbine rotor and the generator rotor utilize the same rotating shaft, a coupling is omitted for butt joint, running resistance can be effectively reduced, running is stable at a high rotating speed, and the steam turbine generator set is suitable for a steam turbine generator set with the rotating speed being more than 9000 rpm and the power being less than 10 megawatts.
A steam sealing structure 6 is arranged between the steam turbine rotor and the generator rotor on the integral rotating shaft 1, so that high-pressure steam on one side of the steam turbine rotor is prevented from flowing to one side of the generator, and the stability of unit operation is ensured.
Preferred specific examples of the thrust bearing structure are:
the thrust bearing structure comprises a two-way thrust bearing 5 and a pair of radial bearings 4 or more arranged at the end part of the integral rotating shaft, the generator rotor is positioned between the pair of radial bearings, one radial bearing is positioned between the turbine rotor and the generator rotor, the steam sealing structure of the thrust bearing structure is arranged between the turbine rotor and the radial bearing adjacent to the turbine rotor, and the two-way thrust bearing is a bearing which can realize thrust in both radial direction and axial direction.
The thrust bearing structure comprises a pair of radial thrust bearings 8 or more than two radial thrust bearings; preferably, a pair of radial thrust bearings is arranged, a limiting disc 7 is arranged on the integral rotating shaft corresponding to the radial thrust bearings, and the end face of each radial thrust bearing is arranged corresponding to one side face of the limiting disc.
As shown in fig. 2, a pair of radial thrust bearings are located between the turbine rotor and the generator rotor, and the turbine rotor and the generator rotor are located at two ends of the integral rotating shaft, and a limiting disc is arranged on the inner side corresponding to each radial thrust bearing.
As shown in fig. 3, the turbine rotor and the generator rotor are located between a pair of radial thrust bearings, the pair of radial thrust bearings are disposed at both ends of the integral rotating shaft, and a limiting plate is disposed inside each of the radial thrust bearings.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (8)
1. The utility model provides a turbo generator set, includes the steam turbine rotor and the generator rotor that set up side by side, the steam turbine rotor is established in steam turbine rotor pivot, the generator rotor is established in generator rotor pivot, its characterized in that: the steam turbine rotor rotating shaft and the generator rotor rotating shaft are the same integral rotating shaft, and a thrust bearing structure is arranged corresponding to the integral rotating shaft.
2. The turbo-generator set of claim 1, wherein: the thrust bearing structure comprises a two-way thrust bearing arranged at the end part of the integral rotating shaft and a pair of radial bearings or more than two radial bearings.
3. The turbo-generator set of claim 1, wherein: the thrust bearing structure comprises a pair of radial thrust bearings or more than two thrust bearings.
4. The turbo-generator set of claim 1, wherein: and a steam sealing structure is arranged between the steam turbine rotor and the generator rotor on the integral rotating shaft.
5. The turbo-generator set of claim 2 or 4, wherein: the generator rotor is positioned between a pair of radial bearings, one between the turbine rotor and the generator rotor.
6. The turbo-generator set of claim 3, wherein: the whole rotating shaft is provided with a limiting disc corresponding to the radial thrust bearing, and the end face of the radial thrust bearing is arranged corresponding to one side face of the limiting disc.
7. The turbo-generator set of claim 3, wherein: the pair of radial thrust bearings are located between the turbine rotor and the generator rotor.
8. The turbo-generator set of claim 3, wherein: the turbine rotor and the generator rotor are positioned between a pair of radial thrust bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922331255.7U CN211008782U (en) | 2019-12-23 | 2019-12-23 | Steam turbine generator unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922331255.7U CN211008782U (en) | 2019-12-23 | 2019-12-23 | Steam turbine generator unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008782U true CN211008782U (en) | 2020-07-14 |
Family
ID=71481332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922331255.7U Active CN211008782U (en) | 2019-12-23 | 2019-12-23 | Steam turbine generator unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211008782U (en) |
-
2019
- 2019-12-23 CN CN201922331255.7U patent/CN211008782U/en active Active
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